题目内容
计算:
(1)-3+5.3+7-5.3
(2)(-2)×
÷(-
)×4
(3)-16-|-5|+2×(-
)2
(4)(
-
)÷(-
)+(-3)3÷(-3)
(5)-
+
÷[(-1
)3+(-
)2]×|-2.52|-
.
(1)-3+5.3+7-5.3
(2)(-2)×
3 |
2 |
3 |
4 |
(3)-16-|-5|+2×(-
1 |
2 |
(4)(
1 |
3 |
1 |
4 |
1 |
12 |
(5)-
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
(1)-3+5.3+7-5.3
=-8.3+12.3
=4;
(2)(-2)×
÷(-
)×4
=2×
×
×4
=16;
(3)-16-|-5|+2×(-
)2
=-1-5+2×
=-1-5+
=-5
;
(4)(
-
)÷(-
)+(-3)3÷(-3)
=﹙
-
﹚×﹙-12﹚+﹙-3﹚2
=-4+3+9
=8;
(5)-
+
÷[(-1
)3+(-
)2]×|-2.52|-
=-
+
÷[-
+
]×
-
=-
+
×﹙-
﹚×
-
=-
-1-
=-2.
=-8.3+12.3
=4;
(2)(-2)×
3 |
2 |
3 |
4 |
=2×
3 |
2 |
4 |
3 |
=16;
(3)-16-|-5|+2×(-
1 |
2 |
=-1-5+2×
1 |
4 |
=-1-5+
1 |
2 |
=-5
1 |
2 |
(4)(
1 |
3 |
1 |
4 |
1 |
12 |
=﹙
1 |
3 |
1 |
4 |
=-4+3+9
=8;
(5)-
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
=-
1 |
2 |
1 |
2 |
27 |
8 |
1 |
4 |
25 |
4 |
1 |
2 |
=-
1 |
2 |
1 |
2 |
8 |
25 |
25 |
4 |
1 |
2 |
=-
1 |
2 |
1 |
2 |
=-2.
练习册系列答案
相关题目